X-Git-Url: http://xvm.mit.edu/gitweb/invirt/packages/python-afs.git/blobdiff_plain/8de7871a5e5f6187514d5021fdfae89847933401..2adb045057d5a1f2073846b20aa91af4e9ef0380:/afs/_pts.pyx diff --git a/afs/_pts.pyx b/afs/_pts.pyx index 8a5751c..e25ac61 100644 --- a/afs/_pts.pyx +++ b/afs/_pts.pyx @@ -1,8 +1,113 @@ from afs cimport * +cdef import from "afs/ptuser.h": + enum: + PR_MAXNAMELEN + PRGRP + ANONYMOUSID + + ctypedef char prname[PR_MAXNAMELEN] + + struct namelist: + unsigned int namelist_len + prname *namelist_val + + struct prlist: + unsigned int prlist_len + afs_int32 *prlist_val + + struct idlist: + unsigned int idlist_len + afs_int32 *idlist_val + + struct prcheckentry: + afs_int32 flags + afs_int32 id + afs_int32 owner + afs_int32 creator + afs_int32 ngroups + afs_int32 nusers + afs_int32 count + afs_int32 reserved[5] + char name[PR_MAXNAMELEN] + + int ubik_PR_NameToID(ubik_client *, afs_int32, namelist *, idlist *) + int ubik_PR_IDToName(ubik_client *, afs_int32, idlist *, namelist *) + int ubik_PR_INewEntry(ubik_client *, afs_int32, char *, afs_int32, afs_int32) + int ubik_PR_NewEntry(ubik_client *, afs_int32, char *, afs_int32, afs_int32, afs_int32 *) + int ubik_PR_Delete(ubik_client *, afs_int32, afs_int32) + int ubik_PR_AddToGroup(ubik_client *, afs_int32, afs_int32, afs_int32) + int ubik_PR_RemoveFromGroup(ubik_client *, afs_int32, afs_int32, afs_int32) + int ubik_PR_ListElements(ubik_client *, afs_int32, afs_int32, prlist *, afs_int32 *) + int ubik_PR_ListOwned(ubik_client *, afs_int32, afs_int32, prlist *, afs_int32 *) + +cdef import from "afs/pterror.h": + enum: + PRNOENT + PRTOOMANY + + void initialize_PT_error_table() + +cdef class PTEntry: + cdef public afs_int32 flags + cdef public afs_int32 id + cdef public afs_int32 owner + cdef public afs_int32 creator + cdef public afs_int32 ngroups + cdef public afs_int32 nusers + cdef public afs_int32 count + cdef afs_int32 reserved[5] + cdef public char * name + +cdef int _ptentry_from_c(PTEntry p_entry, prcheckentry c_entry) except -1: + if p_entry is None: + raise TypeError + return -1 + + p_entry.flags = c_entry.flags + p_entry.id = c_entry.id + p_entry.owner = c_entry.owner + p_entry.creator = c_entry.creator + p_entry.ngroups = c_entry.ngroups + p_entry.nusers = c_entry.nusers + p_entry.count = c_entry.count + memcpy(p_entry.reserved, c_entry.reserved, sizeof(p_entry.reserved)) + p_entry.name = c_entry.name + return 0 + +cdef int _ptentry_to_c(prcheckentry * c_entry, PTEntry p_entry) except -1: + if p_entry is None: + raise TypeError + return -1 + + c_entry.flags = p_entry.flags + c_entry.id = p_entry.id + c_entry.owner = p_entry.owner + c_entry.creator = p_entry.creator + c_entry.ngroups = p_entry.ngroups + c_entry.nusers = p_entry.nusers + c_entry.count = p_entry.count + memcpy(c_entry.reserved, p_entry.reserved, sizeof(p_entry.reserved)) + strncpy(c_entry.name, p_entry.name, sizeof(c_entry.name)) + return 0 + cdef class PTS: + """ + A PTS object is essentially a handle to talk to the server in a + given cell. + + cell defaults to None. If no argument is passed for cell, PTS + connects to the home cell. + + sec is the security level, an integer from 0 to 3: + - 0: unauthenticated connection + - 1: try authenticated, then fall back to unauthenticated + - 2: fail if an authenticated connection can't be established + - 3: same as 2, plus encrypt all traffic to the protection + server + """ cdef ubik_client * client - + def __cinit__(self, cell=None, sec=1): cdef afs_int32 code cdef afsconf_dir *cdir @@ -13,18 +118,20 @@ cdef class PTS: cdef rx_securityClass *sc cdef rx_connection *serverconns[MAXSERVERS] cdef int i - + + initialize_PT_error_table() + if cell is None: c_cell = NULL else: c_cell = cell - + self.client = NULL - + code = rx_Init(0) if code != 0: raise Exception(code, "Error initializing Rx") - + cdir = afsconf_Open(AFSDIR_CLIENT_ETC_DIRPATH) if cdir is NULL: raise OSError(errno, @@ -33,12 +140,12 @@ cdef class PTS: code = afsconf_GetCellInfo(cdir, c_cell, "afsprot", &info) if code != 0: raise Exception(code, "GetCellInfo: %s" % afs_error_message(code)) - + if sec > 0: strncpy(prin.cell, info.name, sizeof(prin.cell)) prin.instance[0] = 0 strncpy(prin.name, "afs", sizeof(prin.name)) - + code = ktc_GetToken(&prin, &token, sizeof(token), NULL); if code != 0: if sec >= 2: @@ -53,12 +160,12 @@ cdef class PTS: sc = rxkad_NewClientSecurityObject(level, &token.sessionKey, token.kvno, token.ticketLen, token.ticket) - + if sec == 0: sc = rxnull_NewClientSecurityObject() else: sec = 2 - + memset(serverconns, 0, sizeof(serverconns)) for 0 <= i < info.numServers: serverconns[i] = rx_NewConnection(info.hostAddr[i].sin_addr.s_addr, @@ -66,13 +173,194 @@ cdef class PTS: PRSRV, sc, sec) - + code = ubik_ClientInit(serverconns, &self.client) if code != 0: raise Exception("Failed to initialize ubik connection to Protection server: %s" % afs_error_message(code)) - + code = rxs_Release(sc) - + def __dealloc__(self): ubik_ClientDestroy(self.client) rx_Finalize() + + def NameToId(self, name): + """ + Converts a user or group to an AFS ID. + """ + cdef namelist lnames + cdef idlist lids + cdef afs_int32 code, id + name = name.lower() + + lids.idlist_len = 0 + lids.idlist_val = NULL + lnames.namelist_len = 1 + lnames.namelist_val = malloc(PR_MAXNAMELEN) + strncpy(lnames.namelist_val[0], name, PR_MAXNAMELEN) + code = ubik_PR_NameToID(self.client, 0, &lnames, &lids) + if lids.idlist_val is not NULL: + id = lids.idlist_val[0] + free(lids.idlist_val) + if id == ANONYMOUSID: + code = PRNOENT + if code != 0: + raise Exception("Failed to lookup PTS name: %s" % afs_error_message(code)) + return id + + def IdToName(self, id): + """ + Convert an AFS ID to the name of a user or group. + """ + cdef namelist lnames + cdef idlist lids + cdef afs_int32 code + cdef char name[PR_MAXNAMELEN] + + lids.idlist_len = 1 + lids.idlist_val = malloc(sizeof(afs_int32)) + lids.idlist_val[0] = id + lnames.namelist_len = 0 + lnames.namelist_val = NULL + code = ubik_PR_IDToName(self.client, 0, &lids, &lnames) + if lnames.namelist_val is not NULL: + strncpy(name, lnames.namelist_val[0], sizeof(name)) + free(lnames.namelist_val) + if lids.idlist_val is not NULL: + free(lids.idlist_val) + if name == str(id): + code = PRNOENT + if code != 0: + raise Exception("Failed to lookup PTS ID: %s" % afs_error_message(code)) + return name + + def CreateUser(self, name, id=None): + """ + Create a new user in the protection database. If an ID is + provided, that one will be used. + """ + cdef afs_int32 code + cdef afs_int32 cid + name = name[:PR_MAXNAMELEN].lower() + + if id is not None: + cid = id + + if id is not None: + code = ubik_PR_INewEntry(self.client, 0, name, cid, 0) + else: + code = ubik_PR_NewEntry(self.client, 0, name, 0, 0, &cid) + + if code != 0: + raise Exception("Failed to create user: %s" % afs_error_message(code)) + return cid + + def CreateGroup(self, name, owner, id=None): + """ + Create a new group in the protection database. If an ID is + provided, that one will be used. + """ + cdef afs_int32 code, cid + + name = name[:PR_MAXNAMELEN].lower() + oid = self.NameToId(owner) + + if id is not None: + cid = id + code = ubik_PR_INewEntry(self.client, 0, name, cid, oid) + else: + code = ubik_PR_NewEntry(self.client, 0, name, PRGRP, oid, &cid) + + if code != 0: + raise Exception("Failed to create group: %s" % afs_error_message(code)) + return cid + + def Delete(self, id): + """ + Delete the protection database entry with the provided ID. + """ + cdef afs_int32 code + + code = ubik_PR_Delete(self.client, 0, id) + if code != 0: + raise Exception("Failed to delete user: %s" % afs_error_message(code)) + + def AddToGroup(self, uid, gid): + """ + Add the user with the given ID to the group with the given ID. + """ + cdef afs_int32 code + + code = ubik_PR_AddToGroup(self.client, 0, uid, gid) + if code != 0: + raise Exception("Failed to add user to group: %s" % afs_error_message(code)) + + def RemoveFromGroup(self, uid, gid): + """ + Remove the user with the given ID from the group with the given ID. + """ + cdef afs_int32 code + + code = ubik_PR_RemoveFromGroup(self.client, 0, uid, gid) + if code != 0: + raise Exception("Failed to remove user from group: %s" % afs_error_message(code)) + + def ListMembers(self, id): + """ + Get the membership of an entity. + + If id is a group ID, this returns the users that are in that + group. + + If id is a user ID, this returns the list of groups that user + is on. + + This returns a list of PTS IDs. + """ + cdef afs_int32 code, over + cdef prlist alist + cdef int i + cdef object members = [] + + alist.prlist_len = 0 + alist.prlist_val = NULL + + code = ubik_PR_ListElements(self.client, 0, id, &alist, &over) + + if alist.prlist_val is not NULL: + for i in range(alist.prlist_len): + members.append(alist.prlist_val[i]) + free(alist.prlist_val) + + if over: + code = PRTOOMANY + if code != 0: + raise Exception("Failed to get group membership: %s" % afs_error_message(code)) + + return members + + def ListOwned(self, oid): + """ + Get all groups owned by an entity. + """ + cdef afs_int32 code, over + cdef prlist alist + cdef int i + cdef object owned = [] + + alist.prlist_len = 0 + alist.prlist_val = NULL + + code = ubik_PR_ListOwned(self.client, 0, oid, &alist, &over) + + if alist.prlist_val is not NULL: + for i in range(alist.prlist_len): + owned.append(alist.prlist_val[i]) + free(alist.prlist_val) + + if over: + code = PRTOOMANY + if code != 0: + raise Exception("Failed to get owned entities: %s" % afs_error_message(code)) + + return owned